Lenka!

Lenka is a remarkably simple yet powerful, dedicated black & white camera app developed in France by world renowned photographer Kevin Abosch (kevinabosch.com) for professionals & amateurs alike, to create beautiful black & white photographs. Lenka is optimized for use with an iPhone 5/5c/5s/6/6 Plus/6s/6s Plus For highest image quality, we suggest using these devices with iOS 9.1 installed. - Tech CrunchLenkas simplicity is what makes the app so alluring - PetaPixel